Since 2016, IPE has been collecting water quality data released by governments across China, organizing and classifying them, and displaying them on the Blue Map website and app. IPE developed the City Water Environment Index (CWEI) in 2019, which compares surface water conditions in different cities across China. On the World Water Day of 2022, Blue Map launches its fourth quarterly report for CWEI evaluation for 2021. This report compares the surface water quality in 361 cities across the country in the fourth quarter of 2022, as well as changes in water quality over the eight quarters since 2020.

Since 2016, IPE has been collecting water quality data released by governments across China, organizing and classifying them, and displaying them on the Blue Map website and app. IPE developed the City Water Environment Index (CWEI) in 2019, which compares surface water conditions in different cities across China. Starting from this issue, IPE will publish quarterly reports on the CWEI on a regular basis. The first report will be for the third quarter of 2021.

The Garbage Sorting Index (GSI) was designed by IPE based on the Snapshot questionnaire to quantify the actual situation of waste sorting in cities, districts (cities) and residential communities at the prefecture level and above in four dimensions: performance of community garbage sorting, community garbage sorting management measures, garbage sorting and transportation, and urban domestic garbage management system. This report uses the Snapshot data as of October 31, 2021 to calculate the community Garbage Sorting Index in the main urban areas of 22 key cities. The evaluation results show that the Yangtze River Delta is the overall leader, following Shanghai's first implementation of garbage classification in China, Suzhou City has built a proven management model and is far ahead with a total score of 86.2, and Nanjing City also ranks third with a score of 52.6; ranking second and fourth are Shenzhen (53.5 points) and Beijing (37.9 points). Tianjin, Xi'an and Zhengzhou ranked next.

In May 2020, IPE and the Vanke Foundation jointly developed a garbage map, and jointly launched the "Snapshot Lightens Up Neighborhood Garbage Sorting" campaign under the guidance of the China Forum of Environmental Journalists. Since June 2020, a total of 1,400 neighborhoods in 157 cities have been photographed for garbage sorting. Through online and offline research in these communities, as well as analysis and summary of international and domestic experience, we have extracted the core modules needed to ensure community waste separation mechanisms. On the basis of the two research reports, IPE and the Vanke Foundation also wrote the "Suggestions for Regulations on Domestic Waste Management".

To help promote the implementation of garbage separation in key cities, China Zero Waste Alliance, Friends of Nature, Wuhu Ecology Center, IPE, and volunteers from several environmental protection organizations have formed a garbage separation observation group to mobilize residents to take photos of the waste separation in their neighborhoods with the help of the Garbage Map on the Blue Map App, and form a series of observation reports on garbage separation work. In this report, the observation group focuses on the progress of garbage sorting in Beijing in the past three months, and makes policy recommendations.

In order to help civil organizations devoted to water source environmental protection become familiar with water source management policies and regulations, master basic survey methods and content, form more scientific and systematic survey data, and provide independent third-party survey results with reference value for water source management and research, Changsha Green Xiaoxiang Environmental Science Center (hereinafter referred to as Green Xiaoxiang) and IPE jointly developed the "Water Source Information Disclosure and Environmental Management Status Assessment Index System" and the accompanying operational guidelines based on national regulations, standards and policies related to water source protection, combined with many years of experience in drinking water source surveys and assessment standard development. During the development process, we have received a lot of support from research scholars, government officials, water supply industry practitioners and environmental NGO partners, and we would like to express our deepest gratitude. We look forward to working with our partner organizations to continuously optimize the assessment methodology, improve the quality of the assessment, expand the scale of the assessment, and promote the participation of multiple parties in the protection of drinking water sources to jointly safeguard our lifelines.

In the past three years, government departments at all levels have made great progress in water environment monitoring and water quality information disclosure, but there are still many shortcomings. To confirm the status of water quality information disclosure across the nation and further promote the disclosure of water environmental quality information, IPE developed WQTI based on the requirements of relevant regulations and the need to protect the public's right to know about the environment, and evaluated the status of water quality information disclosure in 2018-2019 for key cities of national environmental protection, forming 120 key cities of environmental protection, scoring and ranking them.